Weft inserter carriage



April 16, 1957 M. CLAEYS WEFT INSERTER CARRIAGE 2 Sheets-Sheet 1 Filed Dec. 1 1951 a MBRCEL c ys M. CLAEYS WEFT INSERTER CARRIAGE 2 Sheets-Sheet 2 EuTon;

April 16, 1957 Filed Dec. 1, i951 /////A I I -7 oot mz aikwkwn United States Patent O 2,788,805 WEF'I INSERTER CARRIAGE Marcel Claeys, Lyon, France Application December 1, 1951, Serial N 259,457

Claims priority, application France June 16, 1951 3 Claims. (Cl. 139-125) The object of the present invention is to provide a mechanically driven weft inserter carriage which will work with absolute security and which will be foolproof.

A further object of the invention is to provide a weft inserter carriage which does away with electromagnets, the weight and unreliableness of which can hardly guarantee a rational working.

Other novel features of construction and advantage will be hereinafter set forth in the detailed description and the appended claims.

For the purpose of illustrating the invention, I have shown in the, accompanying drawings typical embodiments of it, which, in practice will give satisfactory and reliable results. It is, however, to be understood that the various elements of which my invention consists can be variously arranged and organized and my invention is not limitedto the exactarrangement and organization of these elements as herein set forth.

Figure 1 is an elevational View showing the mounting of the weft inserter on rollers of a carriage driven by the help' of a cable.

Figure 2 is a sectional view taken on line 2-2 of Figure 1.

Figure 3 is an enlarged transversal sectional view showingthe weft inserter along the line 3-3 of Figure 1 of a roller carrier.

Figure 4 is a sectional view along line 4-4 of Figure 1 of a guide roller.

Figure 5 is a fragmentary view partly in section of the inserter provided with spring pincers.

Figure 6 is a view partly in vertical section of the end of the inserter and its pincers along line 66 of Figure 5.

Figure 7 is a view of one of the bills for entering the warp threads along line 7-7 of Figure 5.

The device according to the invention comprises a carriage provided above its slide with four roller carriers, supporting directly with the help of guide rollers, the weft inserter, which is retained by an upper guide bar, under which roll the guide rollers of the carriage.

The roller carriers and the guide rollers are mounted between two checks of the inserter, of which the one in front of it forming an angle is provided with two spring pincers for conveying and inserting of the weft by gripping, and also with two bills for entering of the cut warp threads.

Referring to the drawings, a weft inserter carriage 1 is driven by a cable attached to its end at 2, transmitting an alternate movement to a sliding block 3, integral with the carriage, within a slide, which is not shown. On both sides of the carriage are placed two pairs of roller carriers 4 mounted on roll bearings on the shaft 5 mounted on the two cheeks of the U-shaped support 6.

Between each pair of the roller carriers 4 is placed a guide roller 7, mounted on ball bearings, supported by a shaft 8 between the rear straight cheek 9 and the front check 10 in form of an angle iron, kept together by two braces 11.

Between the rollers 7, the weft inserter carries two guide rollers 12 mounted on shafts 8a and provided with an arcuate groove 12a and shaped in such a manner as to have an increasing diameter towards the rear portion 12b.

As shown in Figures 1 and 2, the guide rollers 12 are engaged under a fixed guide bar 13. Between this guide bar 13 and the guide rollers 12 there is clearance of between three to four tenths of a millimeter, necessary for the free passage of the warp without being gripped. Owing to their shape the guide rollers 12 cannot escape from the guide bar 13 during the working motions.

The weft inserter is guided in such a manner on the loom that its straight back check 9 is placed on the same level with the reed (not shown), behind the guide bar.

The check it), placed in front of the guide bar 13, comprises a sole plate 14 which forms a leg and which is provided in its median part between'its sides with two hollows 15 in which are placed two pincers 17, swivelling at 16 and kept pressed against a boss 18 by means of a spring 19. The task of the two pincers 17 is to carry and convey the weft yarn, distributed by two bobbinsplaced on both sides of the loom.

In front of the pincers 17, the weft inserter is provided with two bills 20 which perform the entering of the cut threads inside the warp on each side of the cloth.

Between the vertical check 10 and the pincers 17 there is a trough 21 allowing the passage of a stabilizer 22, cushioning the ends of the travel, and distributing at the same time the weft thread into the pincers 17.

A return spring produces the opening of the shears after" the passing of the tappet nose. the cam shaft of the loom.

The controlling mechanism of the shears, not shown in The cam is mounted on 1 the drawing, may be realized in any suitable manner.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A weft inserter device comprising, in combination, elongated carriage means movable in a predetermined direction and having supporting roller means thereon said supporting roller means including two pairs of support rollers located at opposite ends of said elongated carriage means, respectively; a guide bar spaced from said carriage means and extending in said predetermined direction; elongated support means mounted on and carried by said carriage means and having roller carrier means and guide roller means thereon, said roller carrier means including two carrier rollers located at opposite ends of said elongated support means, respectively, said carrier rollers being spaced from each other so that one of them is between and cooperates with both support rollers of one of said pairs of support rollers and the other of said carrier rollers is between and cooperates with both support rollers of the other of said pairs of support rollers so that said elongated support means is supported solely by both of said pairs of support rollers of said support roller means of said elongated carriage means, and said guide roller means being slightly spaced from and engageable with said guide bar in rolling relation therewith; plate-like means on and extending laterally from said support means; and gripping means on said plate-like means for grasping thread,

The. stabilizer 22 is fixed on the guide bar of the weft in-.

whereby a weft-thread may be held and conveyed by saidgripping'meansfor insertion through the shed'whiie" the moving force exerted in-zsaid directionby said elongated carriage means on said elongated support means 7 is transmitted to eachof said carrier rollers by one of the support rollers of each pair of support rollers, respectively.

2. A Weft inserter device comprising, in combination,.

elongated carriage meansrmovable in a predetermined direction and having supporting roller means thereon, said support roller means including two pairs or" support rollers located at opposite ends of'said, elongated carriage means, respectively; a cylindrical guide bar spaced from said carriage means'and extending; in saidpredee termined directionyelongated' support means: mounted on and carried by'said' carriage means and having roller carrier means and guide. roller means, thereon, saidrroller carrier. means including two carrier rollers located at opposite ends of said elongated support meansyrespectively, said carrier rollers being. spaced from each. other so that one of them is between and cooperates with both support: rollers of one of said pairs of support rollers and'the' other of said carrier rollers is between and'cooperates with both support rollers of the other of said pairs ,of support rollers so thatsaid' elongated support means is supported solely by both of said pairs of supportrrollerstof saidsupporting roller means of said elongated carriage.means, and' said guide roller means being engageable with, said guide bar in rolling relation therewith; plate-like means on and extending laterally from said support means; and gripping means including springpressed' pincer means onsaid plate-like means for grasping thread, whereby a, Weft thread may be held and conveyed by saidgripping means, for insertion through the shed while the moving force exerted in said direction by said elongated carriage meanson said elongated support-means is transmitted to each of said carrier rollers by 'one of the support rollers of each pair of support rollers, respectively.

3. A weft'inserter device comprising, in combination, elongated carriage means movable'in' a predetermined said; supporting. roller means including two pairs of supa port rollers located at oppo 'te ends of said elongated carriage? means, respectively," a" cylindrical" guide bar spaced above said carriage means extending in said predetermined direction; elongated support means mounted on and carried by said carriage means and having roller carrier means and guide roller means thereon, said roller carrier means including;twocarriertrollers located at opposite ends of said elongated support means, respectively,'said carrier rollers being-spacedftom each other so that one of them is between and2 cooperates with both support rollers of one of said pairs of support rollers and the other of said carrier rollers is between, and cooperates with both support rollers of the other of, said pairs of support rollers so that said elongated support means is supported solely, by both 'ofi 'saidpairs tofirsupport rollers of said supporting roller means of said elongated car-. riage means, and said guide roller means being formed with surfaces complementary to and engageable with said guide bar in rolling relation therewith; plateelikfi means on and. extendinglaterallyfrom said support means and having a lateralied'ge; and'grippingrmeans including spring-pressed pincer means andJelongated-slotted means,-

said slottedmeans being arrangedjon the lateralgedgeoft said plate-like means, and said pincer n eansnlieing loi cated on said plate-likemeans intermediate saidslotted means and Said support means of saidj'plate-like means] for grasping thread, whereby a weftf thread may. beheld, and conveyed by said gripping means for insertion through the shed while the moving force exeitedinrsaid direction by saidelongated' carriage means on said elongated support means is transmitted to each offsaid carrier,

133,868 Lyall Dec,. 110, 1872 I 308,489 Greenhalgh Nov. 25,1884:

4 70,426 Hartley Mar. 8;;[892 659,405 Loynd Oct. 9,19% 808,430 7 Bond Dec:- 2.6,,1905' 924,141 Burrows; ..--.r June.'8;: 1909' 

